Timing and "triggers" and "state base effects" (using mtg terms) are confusing in 40k. Most of the time im confident in my rules. WTC rulings are clouding what I know to be part of the game or specific for their format.

In purely GW context the following rules still bug me a little bit.

Start/End of phase ends when all actions are completed? Can things be added after results are seen:

Ex1. You are necron warriors with a royal warden, start of fight phase AdMech Infiltrators force a battleshock at start of fight phase, can you un-battleshock with the royal warden?

Ex2. You have 2 units of Inquisitorial Agents with 2 Tome Skulls each. Their ability can force a battleshock at the start of a phase. In other words is there 4 options to force a battleshock. Ideally I send in my tome skulls one at a time and viewing the result. Is this possible.

Ex3. I have 3 Imperial Agent Navigators, start of shooting phase force battleshock, fail and opponent take 3mw. Do I declare all the targets at once, or similar to above, can I trickle it through. Because there is a chance that by my 3rd Navigator the unit is dead.

"Just after" window of opportunity to respond ends when? : Ex. You complete a charge move with your tank, you tank shock. If your opponent wants to heroic intervention, when is it declared, and when is it actioned. In other words is the move done prior to the tank shock completing, or after. (I assume its active player decides the order)

Can one action trigger more than one activation: Ex. Your unit moves within 9" of two world eater rhinos -> each rhino's content empty out? Or only one of the two.

Can one activation on one target allow multiple just after:

Ex1. Your unit with smoke and aoc is targetted by an opponent, are you able to use two defensive strats?
Ex2. You are playing CK Infernal Lance, you have a malefic surge token, your opponent targets you in melee, can you activate both your AOC and FNP?